package com.itheima.service.impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.common.BaseContext;
import com.itheima.mapper.*;
import com.itheima.pojo.*;
import com.itheima.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Override
    public void submit(Orders orders) {
        // orders订单表  order_detail订单明细表【和购物车明细数据是对象！】
        // 0、获取用户id
        Long userId = BaseContext.getCurrentId();

        // 1、查询购物车数据：select * from shopping_cart where user_id = ?
        LambdaQueryWrapper<ShoppingCart> qw = new LambdaQueryWrapper<>();
        qw.eq(ShoppingCart::getUserId, userId);
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.selectList(qw);

        // 2、查询用户数据 select * from user where id = ?
        User user = userMapper.selectById(userId);

        // 3、根据地址id查询地址数据 select * from address_book where id = ?
        AddressBook addressBook = addressBookMapper.selectById(orders.getAddressBookId());


        long orderId = IdWorker.getId();//订单号

        BigDecimal amount = new BigDecimal(0);//总价

        // 4、保存订单明细数据：点了哪些菜品或套餐 来源购物车数据
        for (ShoppingCart shoppingCart : shoppingCarts) {
            // ShoppingCart shoppingCart --> OrderDetail orderDetail
            OrderDetail orderDetail = new OrderDetail();

            BeanUtils.copyProperties(shoppingCart,orderDetail);

            // orderId需要单独设置单独设置
            orderDetail.setOrderId(orderId);


            // amount 金额单独设置 数量  *  单价
            BigDecimal price = shoppingCart.getAmount();
            BigDecimal number = new BigDecimal(shoppingCart.getNumber());

            //订单明细的金额
            orderDetail.setAmount(price.multiply(number));

            amount = amount.add(orderDetail.getAmount());//
            orderDetailMapper.insert(orderDetail);
        }


        // 5、保存订单数据，有许多数据需要单独设置
        orders.setId(orderId);//订单id
        orders.setOrderTime(LocalDateTime.now());//订单创建时间
        orders.setCheckoutTime(LocalDateTime.now());//订单结账时间
        orders.setStatus(2);//1待付款，2待派送，3已派送，4已完成，5已取消
        orders.setAmount(amount);//总金额
        orders.setUserId(userId);//用户id
        orders.setNumber(String.valueOf(orderId));//订单号
        orders.setUserName(user.getName());//用户名
        orders.setConsignee(addressBook.getConsignee());//收货人
        orders.setPhone(addressBook.getPhone());//收货人联系电话
        orders.setAddress(
                (addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));//省+市+区域+详细地址
        orderMapper.insert(orders);

        // 6、删除当前用户的购物车数据
        // delete from shopping_cart where user_id = ?
        LambdaQueryWrapper<ShoppingCart> qw1 = new LambdaQueryWrapper<>();
        qw1.eq(ShoppingCart::getUserId,userId);
        shoppingCartMapper.delete(qw1);
    }
}
